RayBerg
Forum Senior
Topics: 32
Posts: 150
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[Qset: bd ]- Angiography showed partia obstruction about 3 cm distal to the origin of the right femoral artery.
The left was ok.
Mean arterial pressure in the left femoral artery=100 mmHg ( bloodflow=500 ml/min), mean art.pressure in right fem.art= proximal to obstruction = 100 mm Hg, and distal of obstruction=80 mmHg. Bloodflow in right fem.art=300 ml/min)
The mean venous pressure was 10 mm Hg in the left and right femoral veins.
Q8. The resistance to blood flow in the vascular bed perfused by the right femoral artery was:
a. 0,03 mm Hg/ml/min
b) 0.30
c)3.00
d)3,33
e)33,3
Q9: The resistance to bloodflow in the combined vscular beds perfused by both femoral arteries was:
a) 0,48 mm Hg/ml/min
b) 0,84
c)1,10
d)0,11
e)11,1
Please explain..
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| me007
Forum Guru
Topics: 72
Posts: 803
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b and d
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| drduck
Forum Guru
Topics: 82
Posts: 529
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1.....D
2.....A
dont ask how i got.....
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| RayBerg
Forum Senior
Topics: 32
Posts: 150
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Me007, you got it! So now...can you please post how you got those answers?
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| me007
Forum Guru
Topics: 72
Posts: 803
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P=QR
P = diference btw arterial and venous pressures,
Q- flow
R for the right = 100-10/300= 0,3
R for the left = 100-10/500= 0,18
resistance for the both (parallel) 1/R =1/Rleft+1/Rright=
1/0,3+1/0,18=10/3+100/18=60/18+100/18=160/18
R=18/160=0,1125
sorry for messy math
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| drduck
Forum Guru
Topics: 82
Posts: 529
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thanks.....007
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